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<?xml version="1.0" encoding="ISO-8859-1"?>
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><head><title>glutCreateMenu</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GLUT.xml" title="GLUT"/><link rel="previous" href="glutCopyColormap.3GLUT.xml" title="glutCopyColormap"/><link rel="next" href="glutCreateSubWindow.3GLUT.xml" title="glutCreateSubWindow"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">glutCreateMenu</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glutCopyColormap.3GLUT.xml">Prev</a></td><th width="60%" align="center">GLUT</th><td width="20%" align="right"><a accesskey="n" href="glutCreateSubWindow.3GLUT.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glutCreateMenu.3GLUT"/><div class="titlepage"/><div class="refnamediv"><a name="glutCreateMenu.3GLUT-name"/><h2>Name</h2><p>glutCreateMenu — creates a new pop-up menu.</p></div><div class="refsynopsisdiv"><a name="glutCreateMenu.3GLUT-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>int<tt>glutCreateMenu</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>void(*func)(int<i><tt>value</tt></i>));</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glutCreateMenu.3GLUT-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glutCreateMenu</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>value</tt></i>) →<tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glutCreateMenu.3GLUT-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>func</tt></i></span></dt><dd>
The callback function for the menu that is called when a menu entry from the menu is selected. The value
passed to the callback is determined by the value for the selected menu entry.
</dd></dl></div></div><div class="refsect1" lang="en"><a name="glutCreateMenu.3GLUT-description"/><h2>Description</h2><p>
<tt>glutCreateMenu</tt> creates a new pop-up menu and returns a unique small integer identifier. The range
of allocated identifiers starts at one. The menu identifier range is separate from the window identifier range.
Implicitly, the current menu is set to the newly created menu. This menu identifier can be used when calling <a href="glutSetMenu.3GLUT.xml"><tt>glutSetMenu</tt></a>.
</p><p>
When the menu callback is called because a menu entry is selected for the menu, the current menu will be implicitly set
to the menu with the selected entry before the callback is made.
</p></div><div class="refsect1" lang="en"><a name="glutCreateMenu.3GLUT-example"/><h2>Example</h2><p>
Here is a quick example of how to create a GLUT popup menu with two submenus and attach it to the right button of the
current window:
</p><pre class="programlisting">int submenu1, submenu2;
submenu1 = glutCreateMenu(selectMessage);
glutAddMenuEntry("abc", 1);
glutAddMenuEntry("ABC", 2);
submenu2 = glutCreateMenu(selectColor);
glutAddMenuEntry("Green", 1);
glutAddMenuEntry("Red", 2);
glutAddMenuEntry("White", 3);
glutCreateMenu(selectFont);
glutAddMenuEntry("9 by 15", 0);
glutAddMenuEntry("Times Roman 10", 1);
glutAddMenuEntry("Times Roman 24", 2);
glutAddSubMenu("Messages", submenu1);
glutAddSubMenu("Color", submenu2);
glutAttachMenu(GLUT_RIGHT_BUTTON);</pre></div><div class="refsect1" lang="en"><a name="glutCreateMenu.3GLUT-x_implementation_notes"/><h2>X Implementation Notes</h2><p>
If available, GLUT for X will take advantage of overlay planes for implementing pop-up menus. The use of overlay planes
can eliminate display callbacks when pop-up menus are deactivated. The SERVER_OVERLAY_VISUALS convention is used to
determine if overlay visuals are available.
</p></div><div class="refsect1" lang="en"><a name="glutCreateMenu.3GLUT-see_also"/><h2>See Also</h2><p>
<span class="simplelist"><a href="glutCreateWindow.3GLUT.xml">glutCreateWindow</a>, <a href="glutDestroyMenu.3GLUT.xml">glutDestroyMenu</a>, <a href="glutSetMenu.3GLUT.xml">glutSetMenu</a>, <a href="glutAttachMenu.3GLUT.xml">glutAttachMenu</a></span>
</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="glutCopyColormap.3GLUT.xml">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="reference-GLUT.xml">Up</a></td><td width="40%" align="right"><a accesskey="n" href="glutCreateSubWindow.3GLUT.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glutCopyColormap</td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top">glutCreateSubWindow</td></tr></table></div></body></html>
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